HELIOS Tech Info #198

Windows 11 22H2 SMB1 upgrade warning

Customers should not upgrade to the new Windows 11 22H2 version when using HELIOS PCShare which supports SMB1 only. After enabling the SMB1 protocol for Windows 11 22H2 it does not work when copying files. It results in “end of file” error messages.

We have investigated the SMB1 protocol using Windows 11 22H2 and cannot find anything wrong. The protocol tracing shows exactly the same calls when using Windows 11 before 22H2. We will continue to investigate this.

The HELIOS PCShare SMB2/3 protocol implementation is in development but still not complete, therefore SMB1 is the only SMB protocol supported by HELIOS PCShare.

Our engineers continue to investigate these problems which takes more time. We will update the Tech Info after we have additional news on this.

Updated Information as of March 2025:

With recent updates, the incompatibility problems have been resolved by Microsoft Windows 11H2 updates. Using the following release, HELIOS PCShare G8 works with Windows 11 up to 24H2.

Successfully tested version:

• Windows 11 Pro 22H2 / 24H2
• OS-Build 22621.1134
• HELIOS PCShare G8

To enable SMB1 start the Windows PowerShell with administrative rights (“Run as administrator”) and enter the following command:

> Enable-WindowsOptionalFeature -Online -FeatureName SMB1Protocol